JS-DOM操作应用高级（一）

浏览数：36 / 时间：2015年06月09日

表格应用--tBodies tHead tFoot rows cells

<title>无标题文档</title>
<script>
window.onload=function ()
{
    var oTab=document.getElementById(‘tab1‘);
    //    alert(oTab.getElementsByTagName(‘tbody‘)[0].getElementsByTagName(‘tr‘)[1].getElementsByTagName(‘td‘)[1].innerHTML);
   alert(oTab.tBodies[0].rows[1].cells[1].innerHTML);
}
</script>
</head>

<body>
<table id="tab1" border="1" width="500">
    <thead>
       <td>ID</td>
       <td>姓名</td>
       <td>年龄</td>
    </thead>
    <tbody>
       <tr>
        <td>1</td>
        <td>blue</td>
        <td>23</td>
       </tr>
       <tr>
        <td>2</td>
        <td>张三</td>
        <td>24</td>
       </tr>
       <tr>
        <td>3</td>
        <td>李四</td>
        <td>25</td>
       </tr>
       <tr>
        <td>4</td>
        <td>王五</td>
        <td>26</td>
       </tr>
    </tbody>
</table>
</body>

技术分享

隔行变色，选中高亮

<title>无标题文档</title>
<script>
window.onload=function ()
{
    var oTab=document.getElementById(‘tab1‘);
    var oldColor=‘‘;
    
    for(var i=0;oTab.tBodies[0].rows.length;i++)
    {
        oTab.tBodies[0].rows[i].onmouseover=function ()
        {
            oldColor=this.style.background;
            this.style.background=‘yellow‘;
        }
        oTab.tBodies[0].rows[i].onmouseout=function ()
        {
            this.style.background=oldColor;
        }
        if(i%2)
        {
            oTab.tBodies[0].rows[i].style.background=‘‘;
        }
        else
        {
            oTab.tBodies[0].rows[i].style.background=‘green‘;
        }
    }
}
</script>
</head>

<body>
<table id="tab1" border="1" width="500">
    <thead>
       <td>ID</td>
       <td>姓名</td>
       <td>年龄</td>
    </thead>
    <tbody>
       <tr>
        <td>1</td>
        <td>blue</td>
        <td>23</td>
       </tr>
       <tr>
        <td>2</td>
        <td>张三</td>
        <td>24</td>
       </tr>
       <tr>
        <td>3</td>
        <td>李四</td>
        <td>25</td>
       </tr>
       <tr>
        <td>4</td>
        <td>王五</td>
        <td>26</td>
       </tr>
    </tbody>
</table>
</body>

技术分享

添加、删除一行，还有id号的处理（一般ID号不复用，删除了就不再用了）

<title>无标题文档</title>
<script>
window.onload=function ()
{
    var oTab=document.getElementById(‘tab1‘);
    
    var oBtn=document.getElementById(‘btn1‘);
    var oName=document.getElementById(‘name‘);
    var oAge=document.getElementById(‘age‘);
    var id=oTab.tBodies[0].rows.length+1;
    
    oBtn.onclick=function ()
    {
        var oTr=document.createElement(‘tr‘);
        
        var oTd=document.createElement(‘td‘);
        oTd.innerHTML=id++;
        oTr.appendChild(oTd);
        
        var oTd=document.createElement(‘td‘);
        oTd.innerHTML=oName.value;
        oTr.appendChild(oTd);
        
        var oTd=document.createElement(‘td‘);
        oTd.innerHTML=oAge.value;
        oTr.appendChild(oTd);
        
        var oTd=document.createElement(‘td‘);
        oTd.innerHTML=‘<a href="javascript:;">删除</a>‘;
        oTr.appendChild(oTd);
        
        oTd.getElementsByTagName(‘a‘)[0].onclick=function ()
        {
            oTab.tBodies[0].removeChild(this.parentNode.parentNode);
        }
        
        oTab.tBodies[0].appendChild(oTr);
    }
}
</script>
</head>

<body>
姓名：<input id="name" type="text"/>
年龄：<input id="age" type="text"/>
<input id="btn1" type="button" value="添加"/>
<table id="tab1" border="1" width="500">
    <thead>
       <td>ID</td>
       <td>姓名</td>
       <td>年龄</td>
       <td>操作</td>
    </thead>
    <tbody>
       <tr>
        <td>1</td>
        <td>blue</td>
        <td>23</td>
        <td></td>
       </tr>
       <tr>
        <td>2</td>
        <td>张三</td>
        <td>24</td>
        <td></td>
       </tr>
       <tr>
        <td>3</td>
        <td>李四</td>
        <td>25</td>
        <td></td>
       </tr>
       <tr>
        <td>4</td>
        <td>王五</td>
        <td>26</td>
        <td></td>
       </tr>
    </tbody>
</table>
</body>